Command Line Text Processing

Learn about various commands available for common and exotic text processing needs. Examples have been tested on GNU/Linux - there'd be syntax/feature variations with other distributions, consult their respective man pages for details.

⚠️ ⚠️ I'm no longer actively working on this repo. Instead, I've converted existing chapters into ebooks (see ebook section below for links), available under the same license. These ebooks are better formatted, updated for newer versions of the software, includes exercises, solutions, etc. Since all the chapters have been converted, I'm archiving this repo.

Ebooks

Individual online ebooks with better formatting, explanations, exercises, solutions, etc:

See https://learnbyexample.github.io/books/ for links to PDF/EPUB versions and other ebooks.

Chapters

As mentioned earlier, I'm no longer actively working on these chapters:

Cat, Less, Tail and Head
- cat, less, tail, head, Text Editors
GNU grep
GNU sed
GNU awk
Perl the swiss knife
Ruby one liners
Sorting stuff
- sort, uniq, comm, shuf
Restructure text
- paste, column, pr, fold
Whats the difference
- cmp, diff
Wheres my file
File attributes
- wc, du, df, touch, file
Miscellaneous
- cut, tr, basename, dirname, xargs, seq

Webinar recordings

Recorded couple of videos based on content in the chapters, not sure if I'll do more:

See also my short videos on Linux command line tips

Exercises

Check out exercises directory to solve practice questions on grep, right from the command line itself.

See also my TUI-apps repo for interactive CLI text processing exercises.

Contributing

Please open an issue for typos or bugs
- As this repo is no longer actively worked upon, please do not submit pull requests
Share the repo with friends/colleagues, on social media, etc to help reach other learners
In case you need to reach me, mail me at echo 'yrneaolrknzcyr.arg@tznvy.pbz' | tr 'a-z' 'n-za-m' or send a DM via twitter

Acknowledgements

unix.stackexchange and stackoverflow - for getting answers to pertinent questions as well as sharpening skills by understanding and answering questions
Forums like Linux users, /r/commandline/, /r/linux/, /r/ruby/, news.ycombinator, devup and others for valuable feedback (especially spotting mistakes) and encouragement
See wikipedia entry 'Roses Are Red' for poem.txt used as sample text input file

License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License

learnbyexample/Command-line-text-processing

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